Thure De Thulstrup ( 1848 - 1930 ) was an American painter. Thure De Thulstrup s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 70 USD for Battle of Gettysburg in 2005 to 2000 USD for Unkown in 2009 , based on the size and medium of the artwork.